50666021561516 has 48 divisors (see below), whose sum is σ = 95144240792160. Its totient is φ = 23534213713920.

The previous prime is 50666021561513. The next prime is 50666021561543. The reversal of 50666021561516 is 61516512066605.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (50666021561513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4116620 + ... + 10875596.

It is an arithmetic number, because the mean of its divisors is an integer number (1982171683170).

Almost surely, 2^{50666021561516} is an apocalyptic number.

It is an amenable number.

50666021561516 is a deficient number, since it is larger than the sum of its proper divisors (44478219230644).

50666021561516 is a wasteful number, since it uses less digits than its factorization.

50666021561516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6760914 (or 6760912 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 50.

The spelling of 50666021561516 in words is "fifty trillion, six hundred sixty-six billion, twenty-one million, five hundred sixty-one thousand, five hundred sixteen".